obliging

动词 oblige:

1. force or compel somebody to do something
   同义词：compel, oblige, obligate
2. bind by an obligation; cause to be indebted
   同义词：oblige, bind, hold, obligate
3. provide a service or favor for someone
   同义词：oblige, accommodate

形容词 obliging:

1. showing a cheerful willingness to do favors for others
   同义词：complaisant

1. You are not obliged to answer these questions, but it would make our task easier.
   这些问题并非非答不可，但答问对我们大有助益。
2. Exhibiting a desire or willingness to please; cheerfully obliging.
   殷勤的表现出取悦别人意愿的; 乐于顺从的

o.blig.ing

adj.（形容词）
Ready to do favors for others; accommodating.See Synonyms at amiable
乐于施惠于人的；热心助人的参见 amiable

【引伸】
oblig.ingly
adv.（副词）
oblig.ingness
n.（名词）